Electron-Beam Computed Tomography

(EBCT; Ultrafast CT)

Definition

Electron-beam computed tomography (EBCT) is a fast and sensitive test for detecting calcium build-up in the arteries of the heart. It uses an electron gun instead of regular
x-rays
to scan the chest.

The amount of calcium build-up in the arteries will give your doctor an idea of whether a condition known as
atherosclerosis
has developed. This condition can lead to narrowing of the arteries,
heart attack,
stroke, and other serious conditions.

Varying Degrees of Atherosclerosis in Coronary Arteries

EBCT may be used to screen
people for
coronary artery disease
(CAD). It can be used before
or after symptoms actually appear.
This test may be most useful for people at moderate risk for heart attacks.
This is important because, for many people, the first sign of CAD is a heart attack.

Prior to Test

Your doctor will discuss your health and medical history, including any risk factors you have for CAD. This will help your doctor determine if EBCT screening is right for you.

Description of Test

You will be asked to lie down on a padded table under an arch-shaped scanner. You may remain clothed and your head will not be enclosed at any time. The scanner moves over your body and takes pictures of your internal organs. During the scan, you will be asked to hold your breath at times to help you remain motionless. A radiographer who runs the scan will be with you to answer any questions or concerns.

The EBCT software measures the calcium deposits in your arteries. This is called the calcification score. Depending on your score, your doctor will discuss any measures you should take to decrease your risk of CAD, such as exercising more or taking medication. Your doctor may also recommend more testing or surgery if your score is very high.

This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.

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